pustovitDmytro / npm-boilerplate

import { assert } from 'chai';

import { entry } from './constants';

export function load(relPath, clearCache) {

    const absPath = path.resolve(entry, relPath);

    if (clearCache) delete require.cache[require.resolve(absPath)];

    // eslint-disable-next-line security/detect-non-literal-require

    const result =  require(absPath);

    if (clearCache) delete require.cache[require.resolve(absPath)];

    return result;

}

export class RuleTester {

    constructor(rules) {

        const { default:cottus, ValidationError } = load('index.js');

        this._validator = cottus.compile(rules);

        this._ValidationError = ValidationError;

    }

    positive(input, output) {

        const result = this._validator.validate(input);

        assert.deepEqual(result, output);

    }

    negative(input, code, message) {

        try {

            this._validator.validate(input);

            assert.fail('rule should fail');

        } catch (error) {

            if (!(error instanceof this._ValidationError)) throw error;

            const json = error.toJSON();

            assert.deepEqual(json.details[0], {

                code,

                message,

                value : input

            });

        }

    }

}